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...DRILLING FLUIDS
The key to making the rotary drilling system work is the ability to circulate a fluid continuously down through the drill pipe, out through the bit nozzles and back to the surface.
The drilling fluid can be air, foam (a combination of air and liquid or a liquid.
Liquid drilling fluids are commonly called drilling mud.
All drilling fluids, especially drilling mud, can have a wide range of chemical and physical properties. These properties are specifically designed for drilling conditions and the special problems that must be handled in drilling a well.
Purpose of Drilling Fluids
1. Cooling and lubrication. As the bit drills into the rock formation, the friction caused by the rotating bit against the rock generate heat. The heat is dissipated by the circulating drilling fluid. The fluid also lubricates the bit.
2. Cuttings removal. An important function of the drilling fluid is to carry rock cuttings removed by the bit to the surface. The drilling flows through treating equipment where the cuttings are removed and the clean fluid is again pumped down through the drill pipe string.
3. Suspend cuttings. There are times when circulation has to be stopped. The drilling fluid must have that gelling characteristics...

...﻿1. Problem Definition
Peter Bremmer, has the opportunity to bid for the drilling contract of one of the largest players in the Canadian mining industry. Winning this bid could be a major step to achieve his growth strategy, but the company currently does not have sufficient equipment and experienced drillers available, the industry is short of skilled workers and the highly cyclical industry environment makes long-term investments risky. Additionally, he has only 3 weeks to make a decision.
2. Criteria selection
Bremmer must evaluate (1) if the tender is supporting Northern’s growth strategy, (2) if they can secure the required experienced workers and the equipment, (3) the potential risks and (4) at what price to bid. The following criteria shall be used:
Alignment with company growth strategy (for 1)
Diversification of income sources (for 1)
Impact on reputation (for 1 and 3)
Access to skilled drillers on the market (for 2)
Access to workers and drills from Noranda contract (for 2)
Feasibility in terms of cash and capabilities (for 2)
Long-term industry outlook (for 3)
Impact on existing customer relationship (for 3)
Competitiveness and strategy of competitors (for 3)
Likelihood to fail to perform the job and perform on time (for 3 and 4)
Profitability and strategic value of the project (for 4)
3. Alternative development
Bremmer has 3 alternatives: (1) Do nothing (=don’t submit bid), (2) submit a bid for both jobs, and (3) submit a bid...

...FORMULAS
All four of these formulas use the following terms: inequality, equivalent, and interval. Formula numbers one, two, and three use the term compound inequality. Formula number four uses the term infinity. In these formulas I am going to figure out the weight amounts, better known as (w). Formulas are definitely something that I have had to re-teach myself. They are not super complicated; but, at first glance, it is definitely confusing. Formulas are definitely not as complicated once they are broke down into a better understanding.
#1. 17 &lt; 703w/4,225 &lt; 22 My height to the second power will be plugged in to (H) as the
amount of 4,225.
17*4225 &lt; 703w &lt; 22*4225 I will take 4,225 and set it up to multiply times 17 and 22.
71,825 &lt; 703w &lt; 92,950 Multiplied.
71,825/703 &lt; 703w/703 &lt; 92,950/703 Now, I will take all three components and divide by
703. 703w/703 will cancel out 703 and leave the (w).
Answer: 102.03 &lt; w &lt; 132.22 People that weigh between 102.03...

...mechanical device on a drilling rig that provides clockwise torque to the drill string to facilitate the process of drilling a borehole.
• Kelly hose
o is a flexible, steel reinforced, high pressure hose that connects the standpipe to the kelly.
• Goose neck
o A thick metal elbow connected to the swivel and standpipe that supports the weight of and provides a downward angle for the kelly hose to hang from.
• Sand trap
o Using during well test operations to separate remaining liquid from the sand and store the sand.
• Spudding in
o It means to begin drilling operations.
• Slugging the pipe
• Moon pool
o Is a feature of marine drilling platform, drill ships and diving spots vessels, some marine research and underwater exploration or research vessels.
o It is an opening in the floor or base of the hull, platform, or chamber giving access to the water below, allowing technicians or researchers to lower tools and instruments into the sea.
• Choke and kill
o Widely used in oilfield, especially for oil well drilling inner and outside explosion proof connection.
• Tool pusher
o In charge of the rig and liaise with the company man
• Roughneck
o A person whose occupation is hard-manual labor, typically in a dangerous working environment.
• Sample catcher
o A person who takes sample for examination at the rig.
o Monitor fluid & cuttings return from down hole.
• Mud...

...Drilling rig
A drilling rig is a machine which creates holes in the ground. Drilling rigs can be massive structures housing equipment used to drill water wells, oil wells, or natural gas extraction wells, or they can be small enough to be moved manually by one person. They sample sub-surface mineral deposits, test rock, soil and groundwater physical properties, and also can be used to install sub-surface fabrications, such as underground utilities, instrumentation, tunnels or wells. Drilling rigs can be mobile equipment mounted on trucks, tracks or trailers, or more permanent land or marine-based structures (such as oil platforms, commonly called 'offshore oil rigs' even if they don't contain a drilling rig). The term "rig" therefore generally refers to the complex of equipment that is used to penetrate the surface of the Earth's crust.
Swanson Drilling East Texas at dusk
Drilling rigs can be:
* Small and portable, such as those used in mineral exploration drilling, water wells and environmental investigations.
* Huge, capable of drilling through thousands of meters of the Earth's crust. Large "mud pumps" circulate drilling mud (slurry) through the drill bit and up the casing annulus, for cooling and removing the "cuttings" while a well is drilled. Hoists in the rig can lift hundreds of tons of pipe. Other equipment can...

...﻿Drilling Fluids
Physical Properties of Mud
PETE 101
Introduction to Petroleum Engineering
Submitted to:
Dr. Shirish Patil
Petroleum Engineering Department
University of Alaska Fairbanks
By:
Me
Abstract
Drilling fluid (mud) is a mixture of water or oil, or emulsion base , clay, weighing material and some chemicals. The combination of mud may vary according to the changes in formation. Drilling fluid plays essential role in drilling process. For this experiment we used a 2000 mL sample of mud with 12 lb/gal density where 6 lb/bbl bentonite. This experiment was performed by using the Marsh Funnel method, pH meter and strips with weighing material barite to determine drilling mud characterizations.
Introduction
Drilling mud is a chemical mixture used while drilling a well for several purposes. The mud is circulated down the drill pipe, out through the drill bit, across the rock face being drilled, then back to the surface carrying debris from the bottom of the well. The mud is then cleaned, tested, and re-used in the well on a continuous basis. Drilling mud has several important functions:
1. Assists in making hole by:
a) Removal of cuttings, the removal of cuttings from the face of the well bore is still one of the most important functions of drilling fluids. Fluid flowing from the bit nozzles exerts a jetting...

...3.1
Drilling rigs and technologies
3.1.1 Introduction
The term drilling indicates the whole complex of operations necessary to construct wells of circular section applying excavation techniques not requiring direct access by man. To drill a well it is necessary to carry out simultaneously the following actions: a) to overcome the resistance of the rock, crushing it into small particles measuring just a few mm; b) to remove the rock particles, while still acting on fresh material; c) to maintain the stability of the walls of the hole; d) to prevent the fluids contained in the drilled formations from entering the well. This can be achieved by various drilling techniques. In this chapter rotary drilling rigs will be examined. These are, in practice, the only ones operating today in the field of hydrocarbons exploration and production. The drilling rigs used on land are complexes of mobile equipment which can be moved in reasonably short times from one drill site to another, drilling a series of wells. In particular, the typical rotary rig for drilling onshore medium to deep wells, indicatively more than 3,000 metres, will be described below. Rigs for shallower depths use analogous but somewhat simpler techniques because of the smaller stresses to which the rig is subject. See Chapter 3.4 for offshore drilling. In rotary drilling the rock is...

...Drilling Fluid Market - Global Industry Analysis, Size, Share, Growth, Trends and Forecast (2012 - 2018)
Browse full report at: http://www.transparencymarketresearch.com/drilling-fluid-market.html
Drilling fluid is the fluid which facilitates the process of drilling borewell into the earth. The main function of a drilling fluid is that it assists in making holes by removal of cuttings, cooling and lubrication of the drill bit, providing a hydrostatic pressure to control well while drilling, helps in preventing mud loss and cleaning the drill bits. Drilling fluids are classified on the basis of their composition and their use as water based fluids, oil based fluids, and synthetic fluids, etc. They are used extensively in the oil and gas industry and for drilling of water wells. China has the largest market in the Asia-Pacific region due to a large number of wells. North America accounted for the largest share in the global drilling market and is expected to grow at a much higher rate.
One of the major factors driving the market for drilling fluids includes the development of shale gas which promotes the use of horizontal drilling and hydraulic fracturing. Development of offshore fields is also helping the manufacturers to generate higher revenues since the cost of oilfield chemicals for offshore fields is much...